Fundamentals of Electric Circuits MCQs (Part-1)

What does Ohm’s law state?

A V = I / R
B P = V * I
C R = V / I
D V = I * R

What is the primary purpose of Kirchhoff’s Current Law (KCL)?

A Current Conservation
B Voltage Conservation
C Power Conservation
D Energy Transfer

What does Kirchhoff’s Voltage Law (KVL) describe?

A Energy Conservation
B Current Flow in a Circuit
C Voltage Distribution in a Loop
D Total Voltage in a Circuit

In a series circuit, what happens to the total resistance?

A Decreases
B Increases
C Changes randomly
D Stays the same

What happens to the voltage in a parallel circuit?

A Varies with resistance
B Increases
C Stays the same
D Decreases

What is the main characteristic of an inductive circuit?

A Resists change in voltage
B Creates AC current
C Stores energy as heat
D Resists change in current

What is a capacitive circuit known for?

A Storing energy as electric field
B Storing energy as magnetic field
C Maintaining constant voltage
D Resisting current flow

Which component stores energy in a magnetic field?

A Resistor
B Diode
C Inductor
D Capacitor

What does transient analysis in a circuit study?

A Short-term variations in current and voltage
B Maximum current in a circuit
C Power consumption
D Long-term voltage stability

In a sinusoidal AC circuit, what represents the peak voltage?

A Zero Crossing
B RMS Value
C Amplitude
D Average Value

What is the primary function of a transformer in a circuit?

A Convert AC to DC
B Step-up or step-down voltage
C Control power flow
D Store energy

What is impedance in an AC circuit?

A Voltage across components
B Inductance in the circuit
C Total opposition to current flow
D Resistance to current flow

What does a resistor do in a circuit?

A Controls voltage
B Creates a magnetic field
C Stores energy
D Limits current

What is the power factor in an AC circuit?

A Ratio of real power to apparent power
B Maximum power in a circuit
C Total energy consumption
D Ratio of resistance to reactance

What is the function of an electrical filter?

A Store energy for later use
B Remove unwanted frequencies
C Control current flow
D Increase power output